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caused the destruction of 27 bridges, over 200 homes and 4.7 billion boards of timber. In addition, 15 miles of railway and 185 miles of highway were damaged or destroyed. Fifty-seven people also lost their lives during the eruption, and another four deaths occurred as an indirect result of the eruption.

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1. 3,600 years ago—Native Americans abandoned hunting grounds devastated by an enormous eruption four times larger than the May 18, 1980 eruption.

2. 1792—Captain George Vancouver named the volcano for Britain’s ambassador to Spain, Alleyne Fitzherbert, also known as Baron St. Helens.

3. 1975—U.S. Geological Survey geologists forecasted that Mount St. Helens would erupt again, “possibly before the end of the century.”

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What Type Of Plate Boundary Did It Occur At And How How Are Those Plates Moving? 

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What Type Of Plate Boundary Did It Occur At And How How Are Those Plates Moving? 

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The plate margin that created Mount St. Helens was destructive, with Juan de Fuca plate sub-ducting beneath the North American, producing the line of volcanoes along the CascadeMountainRange.

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By May 18, the cryptodome (bulge) on the north flank had likely reached the point of instability, and was creeping more rapidly toward failure.

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Mount St. Helens erupted on May 18, 1980. The volcano, located in southwestern Washington, used to be a beautiful symmetrical cone about 9,600 feet (3,000 meters) above sea level. The eruption, which removed the upper 1,300 feet (396 meters) of the summit, left a horseshoe-shaped crater and a barren wasteland.

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The 1980 Mt. Saint Helen’s eruption will go down infamously as one of the Nation’s worst natural disasters to ever occur.

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What can you do in your own home to prepare for this type of disaster

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What can you do in your own home to prepare for this type of disaster

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1. Assembling an emergency preparedness kit.

2.  Creating a household evacuation plan that includes your pets.

3.  Staying informed about your community’s risk and response plans.

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How can we prevent people from dying from this type of disaster?

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How can we prevent people from dying from this type of disaster?

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1. Read about past eruptions.

2. Read about past accidents.

3. Observe the volcano for before getting close to the danger zone.

4. Know the current volcano warning level.

5. Take all precautions in PREVENTING an accident.

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Volcanologists can predict eruptions if they have a thorough understanding of a volcano's eruptive history, if they can install the proper instrumentation on a volcano well in advance of an eruption, and if they can continuously monitor and adequately interpret data coming from that equipment.

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Active volcanoes generally occur close to the major tectonic plate boundaries

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Volcanoes happen when magma rises to the surface of the earth, which causes bubbles of gas to appear in it. This gas can cause pressure to build up in the mountain, and it eventually explodes. When the magma bursts out of the earth, it is called lava.

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a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.